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174 Hz
Free healing-frequency, solfeggio & Om sound generator
The lowest of the nine solfeggio tones, ready to play as a pure tone or a soft, low drone.
Start at a low volume and turn up slowly. Pure tones can sound louder than music at the same setting, especially higher frequencies.
| Frequency | 174 Hz (174 vibrations per second) |
|---|---|
| Nearest musical note (A=440) | F3 −6 cents |
| Wavelength in air | about 197 cm |
| Period of one cycle | 5.75 ms |
| Solfeggio syllable | — |
| Which set | Extended set (later addition) |
| Popular claim | Promoted as a "natural anaesthetic" for pain and as a grounding, foundational tone (a claim, not a demonstrated effect) |
174 Hz is not one of the six numbers in Joseph Puleo's original solfeggio set (396 to 852 Hz). It is one of three tones — with 285 Hz and 963 Hz — that were added later to stretch the scale below and above the original six, and the nine-tone version is what circulates on YouTube and streaming playlists today. Like the rest of the set, its digits reduce to 3, 6 or 9 (1 + 7 + 4 = 12, and 1 + 2 = 3), the numerological pattern its promoters point to.
Musically it is almost exactly an F: F3 in standard A=440 tuning is 174.61 Hz, only about 6 cents away, which is a difference most people cannot hear. That makes 174 Hz one of the few solfeggio tones that sits comfortably alongside a piano, guitar or tuned singing bowl in F.
Online, 174 Hz is usually described as the "pain relief" or "anaesthetic" frequency, said to reduce physical tension and give a sense of safety and grounding. Those descriptions come from sound-healing marketing, not from trials. We are not aware of any controlled study showing that a 174 Hz tone reduces pain. If you are dealing with pain, please talk to a clinician; a tone is not a substitute.
What a low, steady tone like this can genuinely do is sit quietly under a body-scan or breathing practice without pulling your attention, which is why many people like it for winding down.
Nobody has shown that a particular frequency heals the body, repairs DNA or treats a medical condition. The specific benefits attached to each solfeggio number are claims from the books and videos that popularised them, not findings from controlled research. What is well supported is more modest: calm, steady, predictable sound that you like can help you relax, mask distracting noise and give your attention somewhere to rest. Any of these tones can do that — and so can plenty of others.
Use it for: relaxation, meditation, a calm background while you read or rest, sound exploration, or simply because you like it. Don't use it as: a treatment for any medical or mental-health condition. For a deeper look at the whole set, see the solfeggio frequency list.
Very nearly. F3 in standard A=440 tuning is 174.61 Hz, so 174 Hz is about 6 cents flat of it — too small a difference for most listeners to notice.
There is no good evidence that it does. The "pain relief" label comes from solfeggio promoters, not from clinical studies. A calm tone may help some people relax, but it is not a pain treatment.
Small speakers struggle to reproduce low frequencies. Use headphones or larger speakers to hear 174 Hz properly, and resist turning the volume right up to compensate.
No. Joseph Puleo's original set was six tones from 396 to 852 Hz. 174, 285 and 963 Hz were added later to make the nine-tone set that is common online today.